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[tex](x + \sqrt{3} ) \: la puterea \: a \: 2 \: a - (2 \sqrt{3} ) \: la \: puterea \: a \: 2 \: a[/tex]


Răspuns :

= (x+√3) ×(x+√3) − (2√3)×(2√3) =

= (x² + 2x√3+ 3 )- 12 =

= x²+2x√3−9